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Physics > Energy > Flashcards

Energy Flashcards

0
Q

Unit of energy

A

Joules

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1
Q

Energy

A

Is the ability to do work

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2
Q

Potential energy

A

Stored energy waiting to do work such as a coiled spring or elastic band

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3
Q

Kinetic energy

A

The energy that moving things have e.g a windmill or a car moving

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4
Q

Heat energy

A

Heat energy is energy because it can cause things to move e.g hot air causes a hot air ballon to rise and heat in a steam engine can cause a train to move!

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5
Q

Light energy

A

Can move things in a crookes radiomometer or in a solar powered calculator,plants use light energy to make food.

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6
Q

Sound energy

A

If you put your head near a loudspeaker you can feel that air is being moved by sound energy.

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7
Q

Electrical energy

A

This energy can make things like a extractor fans move.it is the flow of electrons around a circuit.

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8
Q

Chemical energy

A

This is a type of energy stored in fuels such as coal and oil, it is also stored in the food we eat and in batteries .

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9
Q

Nuclear energy

A

This energy is stored In the nucleus of atoms, the energy that comes from the sun.

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10
Q

The law of conservation of energy

A

Energy can not be created or destroyed it can only be changed (converted) form one form to another.

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11
Q

Circuit

A

A circuit is made up of a battery,some wires and different types of equipment and can be used to observe energy conversions.

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12
Q

Renewable energy

A

Renewable energy sources are constantly being replaced by nature.

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13
Q

Renewable energy sources

A
  1. Solar energy |5.biomass energy(use plants to make fuel)
  2. Hydro electric |6.geothermal energy(metal under your house)
  3. Wind energy
  4. wave energy
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14
Q

Advantages of renewable energy

A

Renewable energy does not cause pollution.
They will not run out.
They are fairly safe to use.

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15
Q

Disadvantages of renewable energy

A

They are expensive to develop.

More research needs to be done into how to make them good sources of energy.

16
Q

Non renewable energy

A

Can not be replaced and will run out.

17
Q

Non renewable energy sources

A

Fossil fuels (oil,coal,gas,peat).

18
Q

Fossil fuels

A

Oil,coal,natural gas and turf are all examples of fossil fuels .

19
Q

Disadvantage of fossil fuels

A

Hey cause pollution and damage the atmosphere.

20
Q

The sun is a source of all our energy

A

Heats the ocean and air creating win and currents also allows plants to make food.

21
Q

Nuclear energy

A

When the nucleus of an atom is split large amounts of energy are released from it.

22
Q

Advantages of nuclear energy

A

It can kill cancer cells,sterilise food,produce electricity,it will not run out like fossil fuels.

23
Q

Disadvantages of nuclear energy

A

Waste products are harmful (radioactive energy).
Waste products last for a very long time.
If the nuclear energy gets out of control huge explosions may happen.

Physics (12 decks)

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